Nlog-project.org W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Bad value “100px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “20px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “102px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
End tag “main” seen, but there were open elements.
Unclosed element “div”.
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